Mailboundry vs Maildoso
Maildoso is one of the cheapest ways to get a lot of inboxes. What you give up is the IP, the daily send ceiling and the freedom to buy the exact number of mailboxes you need.
VS
Which one fits your sending
Choose Mailboundry if
- A dedicated IP per mailbox instead of rotation across shared IPs
- No 15-a-day ceiling imposed by the mailbox provider
- Buy the exact mailbox count you need, monthly, with no plan blocks
Choose Maildoso if
- You need the lowest sticker price per inbox and will commit quarterly to get it
- A 15-emails-a-day ceiling per mailbox suits how you spread volume
- You want self-healing mailboxes and IP rotation handled for you
Both give you
- SMTP mailboxes built for outbound rather than office email
- Automated DNS and authentication
- Domains bought in-app
- API access
- Deliverability and reputation monitoring
Mailboundry vs Maildoso, side by side
| Feature | Mailboundry | Maildoso |
|---|---|---|
| Model | Dedicated-IP private infrastructure | Proprietary SMTP mailboxes on shared IPs with rotation |
| Dedicated IP | One per mailbox, included | No, shared IPs with rotation |
| Price per mailbox | $3.50 monthly falling to $3.00; $2.50–$2.00 on annual | $2.50 at 30, $2.25 at 70, $1.90 at 300 monthly; $1.80 at 400 on quarterly |
| How you buy | Any number of mailboxes | Plan blocks, 30, 70, 300 or 400 mailboxes |
| Cheapest rate requires | Annual billing, still cancellable at cycle end | $2,199 per quarter paid upfront for 400 mailboxes |
| Domains | $8–$14 / year in-app, up to 5 mailboxes each | $12 / year, bundled free only on quarterly plans |
| Daily send cap per mailbox | Set by your plan and warmup state, not the provider | 15 cold emails per day |
| Warmup | Unlimited, included | Run through your sequencer |
| Sending platform included | Yes, email, LinkedIn, lead data, unified inbox | No |
| Free trial | Free trial on Outboundry | None; 30-day money-back on monthly SMTP plans |
| Time to first send | Minutes | Minutes to hours |
Pricing verified from public pricing pages in August 2026. Providers change terms often, so check the current page before you buy. Where a provider does not publish a rate, we say so rather than guess.
100 mailboxes, both ways
A hundred mailboxes is where per-mailbox pricing stops being an abstraction. Domains are extra on both sides.
100 mailboxes at $2.30 on annual billing, dedicated IP each, domains $8–$14 a year, and no per-mailbox daily ceiling.
100 mailboxes means buying a 70 block at $158 plus a 30 block at $75, on shared IPs capped at 15 emails a day each, plus $12 per domain per year.
Three reasons that decide it
The cheap rate has a quarter attached
Maildoso’s headline per-mailbox price belongs to a 400-mailbox quarterly plan paid upfront. At the 100-mailbox mark the effective cost lands within a few dollars of Mailboundry: and Mailboundry includes the IP.
Caps decide your real capacity
A 15-a-day ceiling means 100 mailboxes is 1,500 sends a day, so volume forces you to buy inboxes rather than warm the ones you have. Mailboundry limits come from your plan and warmup state, not the mailbox.
Rotation is not isolation
Rotating across shared IPs spreads risk; it does not remove it. When placement slips you still cannot separate your behaviour from the pool’s. A dedicated IP per mailbox makes the data yours.
Mailboundry vs Maildoso, answered
Is Maildoso cheaper than Mailboundry?
What is Maildoso’s sending limit?
Does Maildoso give dedicated IPs?
Do I have to buy in blocks?
Own the IPs your cold email leaves from
Buy Mailboundry mailboxes from $2 a month, let DNS configure itself, and run the campaigns in the same place. No per-seat licence, no setup fee, no minimum.
Pricing checked August 2026. Prices and terms belong to their respective owners and change often.